Definition of Invagination

Definition of Invagination

1. Noun. (medicine) The process where an anatomical part invaginates upon itself or into another structure. ¹

2. Noun. One of the methods by which the various germinal layers of the ovum are differentiated. ¹

¹ Source: wiktionary.com

Definition of Invagination

1. [n -S]

Medical Definition of Invagination

1.
1. The condition of an invaginated organ or part.
2. One of the methods by which the various germinal layers of the ovum are differentiated.
In embolic invagination, one half of the blastosphere is pushed in towards the other half, producing an embryonic form known as a gastrula. In epibolic invagination, a phenomenon in the development of some invertebrate ova, the epiblast appears to grow over or around the hypoblast.
Origin: L. Pref. In- + vagina sheath.
Source: Websters Dictionary
(01 Mar 1998)

Invagination Pictures

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Literary usage of Invagination

Below you will find example usage of this term as found in modern and/or classical literature:

1.A Practical Treatise on the Diseases of Children by David Francis Condie (1868)"invagination of the Intestines. Intestinal invagination or intussusception, that
is, the passage of one portion of the intestine within that above or below ..."

2.Special pathology and therapeutics of the diseases of domestic animals v. 2 by Ferenc Hutyra (1913)"Johnk succeeded in this manner to correct invagination and torsion which were
present simultaneously. Since reposition of twisted divisions of the colon ..."

3.Proceedings of the Academy of Natural Sciences of Philadelphia (1908)"APICAL invagination. The first structure which appears in the course of development
is an invagination of ectodermal cells just anterior to ..."

4.Diseases of the Rectum and Anus by Charles Boyd Kelsey (1882)"Fourth Variety: invagination in the Continuity of the Bowel. ... OF prolapse of
the rectum and invagination there are four distinct varieties. 1. ..."

5.The Diseases of Children: A Work for the Practising Physician by Meinhard von Pfaundler, Arthur Schlossmann (1912)"(d) Imagination and Intestinal Occlusion as a Cause of Peritonitis (Operations
in Intestinal Occlusion) For the symptomatology of invagination see Fischl, ..."

6.Quarterly Journal of Microscopical Science edited by Biologists Limited, The Company of. (1880)"Dr. Carl Rabí on the Pedicle of invagination in Pulmonate Gastropoda.—Dr. Rabí has
renewed his investigations on the embryology of Planorbis, ..."

7.Proceedings of the Royal Society of London by Royal Society (Great Britain) (1874)"or ancestral mode of development, and what relation has the orifice of invagination
in the one case to the mouth which, later, breaks its way through in the ..."